# Question 7-6 The results of three drained triaxial shear tests on samples of a clean uniform medium sand are shown in the table below. Test number Confining pressure (kPa) Void ratio 1 100 0.57 2 200 0.58 3 300 0.60 Axial strain (%) Deviator stress (kPa) 0 0.25 0.5 1.0 1.5 2.0 3.0 4.0 6.0 8.0 10.0 0 70 98 133 154 161 173 175 174 172 170 0 126 182 245 280 315 332 342 350 350 348 0 308 392 462 490 500 504 505 498 496 495 (a) Plot the stress-strain curves for each test. (b) Plot the Mohr's circles and draw the strength envelope. (c) Determine the shear strength parameters and write the Coulomb's equation for the strength envelope. (d) Graphically measure the orientation of the failure plane.

LBYSDK The Asker · Civil Engineering

Transcribed Image Text: 7-6 The results of three drained triaxial shear tests on samples of a clean uniform medium sand are shown in the table below. Test number Confining pressure (kPa) Void ratio 1 100 0.57 2 200 0.58 3 300 0.60 Axial strain (%) Deviator stress (kPa) 0 0.25 0.5 1.0 1.5 2.0 3.0 4.0 6.0 8.0 10.0 0 70 98 133 154 161 173 175 174 172 170 0 126 182 245 280 315 332 342 350 350 348 0 308 392 462 490 500 504 505 498 496 495 (a) Plot the stress-strain curves for each test. (b) Plot the Mohr's circles and draw the strength envelope. (c) Determine the shear strength parameters and write the Coulomb's equation for the strength envelope. (d) Graphically measure the orientation of the failure plane.
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Transcribed Image Text: 7-6 The results of three drained triaxial shear tests on samples of a clean uniform medium sand are shown in the table below. Test number Confining pressure (kPa) Void ratio 1 100 0.57 2 200 0.58 3 300 0.60 Axial strain (%) Deviator stress (kPa) 0 0.25 0.5 1.0 1.5 2.0 3.0 4.0 6.0 8.0 10.0 0 70 98 133 154 161 173 175 174 172 170 0 126 182 245 280 315 332 342 350 350 348 0 308 392 462 490 500 504 505 498 496 495 (a) Plot the stress-strain curves for each test. (b) Plot the Mohr's circles and draw the strength envelope. (c) Determine the shear strength parameters and write the Coulomb's equation for the strength envelope. (d) Graphically measure the orientation of the failure plane.